{"instruction": "You are an expert in event extraction. Please extract event types and event trigger words from the input that conform to the schema definition. Return an empty list for non-existent events. Please respond in the format of a JSON string.", "schema": ["potential therapeutic event", "adverse event"], "input": "A 56-year-old white male had been receiving chronic warfarin therapy for 11 years after mechanical heart valve replacement."}
{"potential therapeutic event": ["receiving "], "adverse event": []}